cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A378575 G.f. satisfies A(x) = x + x*A(A(A(A(A(x))))), so that this sequence shifts left under the 5th self-COMPOSE.

Table of values

n a(n)
1 1
2 1
3 5
4 45
5 545
6 7945
7 132005
8 2423501
9 48224129
10 1026722489
11 23177970949
12 551133715197
13 13734995332769
14 357361170997321
15 9677345660994725
16 272075021315860781
17 7925076713952829697
18 238747406787319312025
19 7427421640015549840133
20 238301672444134819413533
21 7875799810817511976148129

List of values

[1, 1, 5, 45, 545, 7945, 132005, 2423501, 48224129, 1026722489, 23177970949, 551133715197, 13734995332769, 357361170997321, 9677345660994725, 272075021315860781, 7925076713952829697, 238747406787319312025, 7427421640015549840133, 238301672444134819413533, 7875799810817511976148129]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.